JP2023168883A - heating cooker - Google Patents

Abstract

To provide a heating cooker improved in safety in comparison with a conventional heating cooker, by cooling a part which may be touched a user.SOLUTION: A heating cooker 100 includes: a housing 10 having an opening 12; a door 20 for opening and closing the opening 12; a first member 21; a handle portion 30; and a blowing portion 40. The first member 21 is mounted on the door 20. The handle portion 30 is mounted on the first member 21. The blowing portion 40 sends the air toward the first member 21. The door 20 forms a first flow channel 41 in which the air from the blowing portion 40 passes, along the handle portion 30.SELECTED DRAWING: Figure 2

Description

The present invention relates to a heating cooker.

BACKGROUND ART A heating cooker that improves the cooling effect and suppresses the temperature rise of electronic components is known. The heating cooker described in Patent Document 1 includes a flow path and a flow path fan. The flow path fan increases the flow rate of gas passing through the flow path and increases the amount of heat discharged in the flow path. In other words, the flow path fan improves the cooling effect, and can suppress the rise in temperature of the display section in the operation section, the circuit board on which electronic components are mounted, and the like.

Japanese Patent Application Publication No. 2013-164237

However, the conventional heating cooker such as that disclosed in Patent Document 1 is intended to suppress the temperature rise of electronic components provided in the operating section and the like. For this reason, there is a problem in that it is difficult to cool parts that are likely to be touched by a user other than the parts where electronic components are arranged.

An object of the present invention is to provide a heating cooker that cools parts that may be touched by a user and is safer than conventional heating cookers.

According to one aspect of the present invention, a cooking device includes a housing having an opening, a door for opening and closing the opening, a first member, a handle, and a blower. The first member is provided on the door. The handle portion is attached to the first member. The air blower blows air toward the first member. The door forms a first flow path along the handle portion through which air from the blower passes.

According to the heating cooker according to the present invention, it is possible to cool parts that a user may touch, thereby improving safety compared to conventional heating cookers.

FIG. 2 is a front view of the cooking device according to the present embodiment. FIG. 2 is a perspective view showing a state in which the first member of the door of the heating cooker shown in FIG. 1 is removed. FIG. 2 is a cross-sectional view of the cooking device shown in FIG. 1 taken along line III-III. FIG. 3 is a rear view of the heating cooker shown in FIG. 2 with the door panel removed. FIG. 2 is a diagram showing a part of a cross section of the heating cooker shown in FIG. 1 taken along the line VV.

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same or corresponding parts are given the same reference numerals and detailed explanations will not be repeated.

<Embodiment>
A heating cooker 100 according to the present embodiment will be described with reference to FIGS. 1 to 5. FIG. 1 is a front view of a heating cooker 100 according to this embodiment. FIG. 2 is a perspective view showing a state in which the first member 21 of the door 20 of the cooking device 100 shown in FIG. 1 is removed. FIG. 3 is a cross-sectional view of the cooking device 100 shown in FIG. 1 taken along line III-III. FIG. 4 is a rear view of the cooking device 100 shown in FIG. 2 with the door panel 24 of the door 20 removed. FIG. 5 is a diagram showing a part of a cross section of the cooking device 100 shown in FIG. 1 taken along the line VV.

As shown in FIG. 1, the cooking device 100 includes a housing 10, a heating chamber 11, a door 20, a handle 30, and a blower 40. The heating cooker 100 of the present embodiment uses air from the blower section 40 to cool the vicinity of the handle section 30, thereby suppressing the temperature rise in the parts that the user may touch, and improving safety. .

The housing 10 has, for example, a substantially rectangular parallelepiped shape with an open front. The heating chamber 11 is provided inside the housing 10 . The heating chamber 11 also has an opening 12 at the front. Then, the user takes the object to be heated into and out of the heating chamber 11 through the opening 12.

The heating cooker 100 may also be in the form of a microwave oven equipped with a magnetron (not shown). The magnetron supplies microwaves to the heating chamber 11 in which the object to be heated is accommodated. A magnetron is an example of a microwave generator. Note that the heating cooker 100 according to the present embodiment may have the functions of either a microwave oven or an oven, or both functions.

The door 20 is rotatably attached around the lower side 10a of the housing 10 as a horizontal axis. Then, the door 20 opens and closes the opening 12 of the heating chamber 11.

As illustrated in FIG. 2, the door 20 includes a first member 21, a second member 22, and a third member 23. The third member 23, as illustrated in FIG. 3, is a door frame that is generally U-shaped in cross-sectional view. The material of the third member 23 is not particularly limited, but resin is used in this embodiment.

The door 20 of FIG. 3 may also include a door panel 24. The door panel 24 is arranged as the back surface of the door 20 so as to close the opening portion 23a of the third member 23.

The first member 21 is attached to the upper part of the third member 23. The first member 21 is made of, for example, metal such as aluminum or stainless steel. However, the material of the first member 21 is not limited to metal. For example, a resin such as polycarbonate may be used.

The thickness of the plate portion of the first member 21 can be set arbitrarily, and is, for example, about 2 mm. However, in order to increase the thickness of the first member 21 and improve the design, such as giving a luxurious appearance, the thickness may be set to 0.8 mm to 5 mm.

As illustrated in FIGS. 2 and 3, the first member 21 has an upper surface 21a and a side surface 21b. This first member 21 is formed to have a generally L-shaped plate shape when viewed in cross section. The handle portion 30 is attached to the side surface 21b of the first member 21. As an example, a rod-shaped member is used for the handle portion 30. Then, the handle portion 30 is attached to the side surface 21b in the left-right direction of the door 20. The user opens and closes the door 20 by grasping the handle portion 30.

The first member 21 further has an inclined surface 21c. The inclined surface 21c connects the upper surface 21a and the side surface 21b. The inclined surface 21c, the upper surface 21a, and the side surface 21b form a first flow path 41, which is a generally triangular duct in cross-sectional view, at the corner 21d of the first member 21. However, the cross-sectional shape of the first flow path 41 is not limited to a triangle. It can be of any shape, such as a rectangle, as long as it allows the air from the air blower 40 to pass through.

As will be described later, the air from the air blower 40 is made to pass through the first flow path 41. By forming the first flow path 41 inside the first member 21 and allowing wind to pass therethrough, the first member 21 can be cooled from the inside.

Further, the first flow path 41 is formed along the handle portion 30. Specifically, as illustrated in FIG. 2, it extends in the left-right direction of the door 20 along the handle portion 30. Here, the first flow path 41 “formed along the handle portion” does not necessarily have to be formed exactly along the handle portion 30 , but may be formed generally along the handle portion 30 . Furthermore, it may be slightly shifted from the handle part 30, and it is sufficient if it is formed in the vicinity of the handle part 30.

That is, the first flow path 41 may be installed in such a manner that the vicinity of the handle portion 30 can be effectively cooled by the wind flowing through the first flow path 41. The detailed structure of the first flow path 41 is arbitrary.

In this way, the first flow path 41 is formed along the handle portion 30 and near the handle portion 30 . Then, the air from the air blower 40 is passed through to cool the vicinity of the handle 30, in other words, the corner 21d of the first member 21 located at the upper front surface of the door 20.

The corner portion 21d of the first member 21 is located near the handle portion 30, and is therefore a location that is easily touched by the user's hand. Specifically, when the user tries to open the door 20 by grasping the handle part 30 or when the user tries to close the door 20 and release the handle part 30, the user's hand tends to hit the handle part 30.

Here, during heating operation of the cooking device 100, heat is also conducted to the first member 21, resulting in a high temperature, and it cannot be said that cooling the first member 21 will take time. When the user's hand hits the first member 21 at high temperature, the user may feel that the user's hand is hotter than usual. Therefore, the first flow path 41 is formed to allow air to pass through to cool the parts that may be touched by the user's hands, thereby improving safety.

Further, as described above, when the first member 21 is made thicker in order to improve the design of the exterior, for example, aluminum having a small specific gravity is used. Aluminum has good thermal conductivity and conducts the heat inside the door 20 over a wide range of the first member 21. Furthermore, since the thickness of the first member 21 is made thicker than usual, the heat once conducted is difficult to cool down. Even in such a case, by forming the first flow path 41, the parts that are likely to be touched by the user's hands are cooled and safety is ensured.

As illustrated in FIGS. 2 and 3, the second member 22 is provided at a different position from the first member 21 in the door 20. In this embodiment, the second member 22 is attached to the lower part of the third member 23. The material of the second member 22 is, for example, metal such as aluminum or stainless steel. Further, it is formed to have a generally L-shaped plate shape when viewed in cross section. However, the material of the second member 22 is not limited to metal. For example, a resin such as polycarbonate may be used.

Similar to the first member 21, the thickness of the plate portion of the second member 22 can be set arbitrarily, and is, for example, about 2 mm. However, in order to increase the thickness of the second member 22 and improve the design, such as giving a luxurious appearance, the thickness may be set to 0.8 mm to 5 mm.

As illustrated in FIG. 2, the heating cooker 100 further includes an operating section 50. The operation section 50 has a liquid crystal display section 51 and operation buttons 52. For example, a touch panel is used for the liquid crystal display section 51. The touch panel can display information necessary for the user or display buttons to prompt the user to operate the cooking device 100. The liquid crystal display section 51 is disposed, for example, near the side surface of the door 20 (on the right side in FIG. 2) between the first member 21 and the second member 22.

For example, a physical button is used as the operation button 52. As an example, the operation button 52 is arranged on the second member 22 below the liquid crystal display section 51.

As illustrated in FIGS. 2 and 3, the cooking device 100 further includes a control unit 60. The control unit 60 is a hardware circuit including a processor such as a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), and the like. The control unit 60 controls the operation of each member of the cooking device 100.

The operating section 50 and the control section 60 are arranged on a vertically elongated substrate 61 in the door 20, as illustrated in FIGS. 2 and 3, for example. The substrate 61 is then covered with a cover 62, which will be described later.

The cooking device 100 further includes a blower section 40 . The blower section 40 is a member that sends air toward the first member 21 . Further, the air blower 40 may blow air toward the second member 22 . In this embodiment, as will be described later, the air blown toward the second member 22 by the air blower 40 is guided to the first member 21.

As illustrated in FIGS. 2 and 4, the blower section 40 is provided at the lower part of the third member 23 and near the operation button 52 arranged on the second member 22. The vicinity of the operation button 52 is also a part that is easily touched by the user during operation.

For example, if the second member 22 is made of thick metal in order to improve the design as described above, it will take time to cool down the second member 22, which has become hot during heating operation of the cooking device 100. . Therefore, the blower section 40 blows air toward the second member 22 to promote cooling around the operation button 52 and improve safety.

For example, a fan is used for the air blower 40. The air intake port 23b of the ventilation section 40 is formed by partially opening the third member 23 on the lower side of the ventilation section 40. The blower section 40 introduces outside air into the door 20 through the intake port 23b and blows the air.

In addition to the first flow path 41 described above, the cooking device 100 may further form a second flow path 42. The second flow path 42 guides the air from the blowing section 40 from the second member 22 to the first member 21 via the operating section 50 .

The second flow path 42 can be formed, for example, by a cover 62 that covers the substrate 61 and the blower section 40 . As illustrated by the solid line in FIG. 3 and the dashed-dotted line in FIG. 42 can be formed. However, the detailed structure of the second flow path 42 can be arbitrary as long as it can guide the wind from the blower section 40 to the first member 21.

Here, a method for cooling the first member 21 and the second member 22 using the air from the air blower 40 will be specifically explained. As illustrated by the arrow in FIG. 4, the air blower 40 first blows air toward the vicinity of the operation button 52 of the second member 22 to cool the vicinity of the operation button 52.

The air from the air blowing section 40 further passes through the liquid crystal display section 51 and the control section 60, and cools the electronic components of the liquid crystal display section 51 and the control section 60. This suppresses the rise in temperature of electronic components and avoids problems such as damage to electronic components.

The air from the blowing section 40 further flows into a first flow path 41 which is connected to the first flow path through a suitable passage (not shown). An appropriate passage may be, for example, one in which a hole, slit, etc. is provided in the portion of the third member 23 in contact with the first member 21, or a passage wall is provided.

The wind that has flowed into the first flow path 41 passes through the first flow path from left to right in the example of FIG. 4, and cools the first member 21 along the handle portion 30. Thereafter, the wind that has reached the right end of the first flow path 41 may naturally exit outside through a gap near the handle 30 of the cooking device 100. Alternatively, the right end of the first member 21 may be partially opened to form an air outlet.

By forming the first flow path 41 and the second flow path 42 in this way, as shown by the arrow in FIG. 60 and the vicinity of the handle portion 30. As a result, parts that the user may touch can be efficiently cooled all at once.

The heating cooker 100 may be provided with a hole 25 illustrated in FIG. 4 as an additional cooling structure. The hole 25 is formed by opening a portion of the third member 23 that corresponds to a portion of the second member 22 to be cooled. In this embodiment, in order to cool the vicinity of the operation button 52 of the second member 22, a hole is formed between the vicinity of the part of the third member 23 corresponding to the operation button 52 and the vicinity of the air outlet 43 of the air blower 40. 25 is open.

Due to the effect of the wind flowing around the hole 25, heat can be easily radiated near the operation button 52 of the second member 22. As a result, the vicinity of the operation button 52 that may be touched by the user can be locally cooled, and safety can be ensured.

Further, in addition to the hole 25 described above, the cooking device 100 may include a heat radiating member 26. The heat radiation member 26 is a member for further promoting heat radiation from the second member 22.

For example, a heat radiation fin can be used as the heat radiation member 26. The heat dissipation fins of the fin structure with a wide surface area can efficiently promote heat dissipation from the second member 22. However, the heat dissipation member 26 of this embodiment is not limited to a heat dissipation fin. Any material can be used as long as it can promote heat dissipation from the second member 22.

As illustrated in FIG. 5, the heat dissipation member 26 is provided on the second member 22. Specifically, the heat radiating member 26 projects from the second member 22 into the door 20 through the hole 25. At this time, the heat radiating member 26 is provided by being welded or screwed to the second member 22. This heat radiating member 26 allows the heat of the second member 22 to be efficiently released into the air.

The embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to the above-described embodiments, and can be implemented in various forms without departing from the spirit thereof. For ease of understanding, the drawing mainly shows each component schematically, and the thickness, length, number, spacing, etc. of each component shown in the diagram may differ from the actual one for convenience of drawing. is different. Further, the materials, shapes, dimensions, etc. of each component shown in the above embodiments are merely examples, and are not particularly limited, and various changes can be made without substantially departing from the configuration of the present invention. be.

The present invention provides a heating cooker and has industrial applicability.

10 Housing 12 Opening 20 Door 21 First member 22 Second member 23 Third member 25 Hole 26 Heat radiation member 30 Handle 40 Air blower 41 First channel 42 Second channel 50 Operation section 100 Cooking device

Claims (9)

a casing having an opening;
a door that opens and closes the opening;
a first member provided on the door;
a handle attached to the first member;
and a blowing section that blows air toward the first member,
The heating cooker, wherein the door forms a first flow path along the handle portion through which air from the blower passes. The cooking device according to claim 1, wherein the first flow path is formed inside the first member. a second member provided at a position different from the first member in the door;
The cooking device according to claim 1, wherein the blowing section blows air toward the second member. an operating section for the heating cooker provided on the second member;
The heating cooker according to claim 3, further comprising a second flow path that guides the air from the blowing section from the second member to the first member via the operating section. The cooking device according to claim 1, wherein the first member is made of metal. The cooking device according to claim 3, wherein the second member is made of metal. The door has a third member,
The cooking device according to claim 3, wherein the first member and the second member are attached to the third member. The cooking device according to claim 7, wherein the third member has a hole for cooling the second member. The cooking device according to claim 8, wherein the second member has a heat radiation member that projects into the door through the hole.

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